docs/doc/source/security/kubernetes/enable-use-of-cert-manager-acmesolver-image-in-a-particular-namespace.rst

Enable Use of cert-manager-acmesolver Image in a Particular Namespace

When an arbitrary user creates a certificate with an external , cert-manager dynamically creates the cert-manager-acmesolver pod and an ingress in the user-specified namespace in order to handle the http01 challenge from the external CA.

In order to pull the registry.local:9001:/public/cert-manager-acmesolver: image from the local registry, the credentials for the public repository must be in a secret and referenced in an ImagePullSecret in the default serviceAccount of that user-specified namespace.

1. Execute the following commands, substituting your deployment-specific value for <USERNAMESPACE>.

   % kubectl get secret registry-local-public-key -n kube-system -o yaml | grep -v '^\s*namespace:\s'  | kubectl apply --namespace=<USERNAMESPACE> -f -
   
   % kubectl patch serviceaccount default  -p "{\"imagePullSecrets\": [{\"name\": \"registry-local-public-key\"}]}" -n <USERNAMESPACE>